WDS 17153-2636 SHJ 243 BD : NOTES
 
 
discov_num notes refcode
SHJ 243 36 Oph = A Oph. AB = HDO 144. Proper motion -480 -1142. A premature
orbit has been computed. A may be a spectroscopic binary.
Three orbit solutions by Irwin et al. (1996); the shortest-period Irw1996
orbit is marginally preferable.
VLTI uniform disk diameter of A: 1.253 +/- 0.025 mas, LTI2009
VLTI limb-darkened disk diameter of A: 1.282 +/- 0.026 mas,
R = 0.817 +/- 0.016 \rsun, Teff = 4843 +/- 134 K.
AC: NLTT 44415/44446 Chm2004
AC: SHY 87. Bayesian analysis by Shaya & Olling (2011) indicates very Shy2011
high (near 100%) probability pair is physical.
C component = CD-26 12036 (mag. 6.34, 700", K5V), proper motion
-481 -1134. C has common proper motion.
The original AC and BC components in the BDS and ADS were changed
to AD and BD in the IDS to accommodate the discovery by Luyten Luy1941
(= LDS 588) assigned AC. This component assignment has been
maintained. However, the BC measures from the BDS were erroneously
assigned to the AD component in the IDS and two AC measures were
assigned to the BD. This has been corrected, as have errors made
in the IDS in the measures of South and Jacob of the AD and BD S__1824
components. PM of D +003+026. Jc_1848b
AD: Optical pair, based on study of relative motion of the components
using the method of apparent motion parameters. Kiy2008
AE: Rectilinear solution by Mason & Hartkopf (2016). Msn2016a
BD: Rectilinear solution by Friedman et al. (2011). USN2011a
 
 
REFERENCES
 
 
refcode metd author reference
Chm2004 E - Chaname, J. & Gould, A. 2004ApJ...601..289C
Chm2004 ApJ 601, 289, 2004
Chm2004 (Photometry, coordinates, and astrometry from rNLTT. Astrometry from early
Chm2004 versions of 2MASS and UCAC, with date given only as "circa 2000". Measures
Chm2004 identical to discovery observations - predominantly close pairs - were assumed
Chm2004 not new observations, so not included in WDS. Similar concerns when primary and
Chm2004 secondary magnitudes or proper motions were the same.)
Irw1996 orb - Irwin, A.W., Yang, S.L.S., & Walker, G.A.H. 1996PASP..108..580I
Irw1996 PASP 108, 580, 1996
Jc_1848b Ma j Jacob, W.S. 1854MadOO....8b...1
Jc_1848b Madras Obs. 8, 1848-1852 Appendix
Kiy2008 - Kiyaeva, O.V., Kiselev, A.A. & Izmailov, I.S. 2008SvAL...32..405K
Kiy2008 SvAL 34, 405, 2008
LTI2009 not j Demory, B.-O., Segransan, D., Forveille, T., Queloz, D., Beuzit, J.-L., Delfosse, 2009A&A...505..205D
LTI2009 X., Di Folco, E., Kervella, P., Le Bouquin, J.-B., Perrier, C., Benisty, M., .
LTI2009 Duvert, G., Hofmann, K.-H., Lopez, B. & Petrov, R. .
LTI2009 A&A 505, 205, 2009 .
Luy1941 Po - Luyten, W.J. 1941POMin...3....1L
Luy1941 Pub. Univ. Minnesota Obs. 3, #3, 1941
Luy1941 (CPM pairs found by comparison of Bruce proper motion plates. First and second
Luy1941 plates epochs were 1898-1904 and 1928-1936, so a default mean date of 1920 was
Luy1941 assigned to all measures.)
Msn2016a lin - Mason, B.D. & Hartkopf, W.I. 2016IAUDS.189....1M
Msn2016a Inf. Circ. 189, 1, 2016
Shy2011 - Shaya, E.J. & Olling, R. 2011ApJS..192....2S
Shy2011 ApJS 192, 2, 2011
Shy2011 (Statistical analysis of probability that wide Hipparcos pairs are physical. Pairs
Shy2011 added to WDS only if probability 90% or greater.)
USN2011a lin - Friedman, E.A., Mason, B.D., & Hartkopf, W.I. 2011IAUDS.175....1F
USN2011a Inf. Circ. 175, 1, 2011
 
 
DISCOVERER
 
 
idgroup discov author
1 SHJ South, J. & Herschel, J.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17153-2636 SHJ 243 BD 1987 6 339 284.9 5.12 7.80 N 171521.50-263604.0
17153-2636 SHJ 243 BD 1991 6 337 272.3 5.12 7.80 K1V NL P 171521.27-263600.2

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